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SI4710-B30-GM
S i 4 7 1 0 / 11- B 3 0 Si4710/11-B30 FM R ADIO T RANSMITTER Features Integrated receive power measurement Worldwide FM band support (76–108 MHz) Requires only two external components Frequency synthesizer with integrated VCO Digital stereo modulator Programmable pre-emphasis Analog/digital audio interface Audio silence detector Programmable reference clock RDS/RBDS encoder (Si4711 only) PCB loop and stub antenna support with self-calibrated capacitor tuning Programmable transmit level Audio dynamic range control Advanced modulation control 2.7 to 5.5 V supply voltage Integrated LDO regulator 3 x 3 x 0.55 mm 20-pin QFN Pb-free and RoHS Compliant Designed for compatibility with cellular operation Ordering Information: See page 32. Pin Assignments Applications Si4710/11 Wireless speakers/microphone Satellite digital audio radios Personal computers/notebooks The Si4710/11 integrates the complete transmit functions for standardscompliant unlicensed FM broadcast stereo transmission. Users must comply with local regulations on radio frequency (RF) transmission. NC 1 20 19 18 17 16 NC 2 15 RIN RFGND 3 14 DFS GND PAD TXO 4 Functional Block Diagram 13 DIN DAC TXO DSP Rev. 1.1 2/08 L1 120 nH AFC RCLK RST SDIO CONTROL INTERFACE SEN GPO ( RDS Si4711 ) GPIO3/DCLK LDO GPIO2/INT GND C1 22 nF RFGND VIO VDD GPO1 2.7–5.5 V DAC SCLK ADC RIN Tx Ant Copyright © 2008 by Silicon Laboratories 9 10 11 VDD VIO 8 RCLK ADC 7 SEN LIN 6 SDIO Si4710/11 DIGITAL AUDIO 12 GND SCLK RST 5 DFS DIN LIN NC Description GPO3/DCLK (Top View) GPO2/INT Cellular handsets/hands-free MP3 players Portable media players GPO1 Patents pending Note: To ensure proper operation and performance, follow the guidelines in “AN383: Universal Antenna Selection and Layout Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers. Si4710/11
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